In band full duplex (IBFD) is an emerging transceiver technology that facilitates simultaneous transmission and reception on the same frequency to double spectral efficiency. Self-interference (SI) from its own transmitter is the biggest challenge in IBFD radios causing significant degradation to its receiver performance. SI cancellation (SIC) techniques proposed in literature involve considerable hardware and software complexities for practical realization of IBFD radios. In this letter, a hybrid cellular architecture is proposed composing of IBFD base station and legacy half duplex user equipments (UEs), thus avoiding complex SIC requirement at UE. A novel frequency allocation scheme is proposed for this hybrid architecture that allows sharing of carrier frequencies among UEs based on distance criteria. As the number of UEs increases, chances of finding UEs that satisfy the distance criteria also increase steadily. Simulation results reveal that the probability of 100% frequency reuse exceeds 0.9 for as few as 8 UEs itself, demonstrating the potential of the proposed idea.